Get some information from Git about build version

libevmjit/CMakeLists.txt

@@ -11,8 +11,19 @@ if (NOT "${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
 	set_source_files_properties(Cache.cpp PROPERTIES COMPILE_FLAGS -fno-rtti)
 endif()
 
+find_package(Git)
+if(GIT_FOUND)
+	execute_process(COMMAND ${GIT_EXECUTABLE} -C ${CMAKE_CURRENT_SOURCE_DIR} describe --dirty --always
+					OUTPUT_VARIABLE EVMJIT_VERSION OUTPUT_STRIP_TRAILING_WHITESPACE)
+endif()
+if(NOT EVMJIT_VERSION)
+	set(EVMJIT_VERSION "unknown")
+endif()
+
+message("EVM JIT version: ${EVMJIT_VERSION}")
+
 add_library(${TARGET_NAME} SHARED ${SOURCES} ${HEADERS})
-set_property(TARGET ${TARGET_NAME} PROPERTY FOLDER "libs")
+set_target_properties(${TARGET_NAME} PROPERTIES VERSION ${EVMJIT_VERSION} FOLDER "libs")
 
 include_directories(${LLVM_INCLUDE_DIRS})